<title>铲雪车</title><link href="http://hzoi.com/tomorrow.css" rel="stylesheet"><div class="ui existing segment"><pre><code><span class="pl-cm">/*</span>
<span class="pl-cm">0 0</span>
<span class="pl-cm">0 0 0 32455</span>
<span class="pl-cm">*/</span>
<span class="pl-cm">/*******************</span>
<span class="pl-cm">	Author  : Zhang Haoling</span>
<span class="pl-cm">	Filename: 1.cpp</span>
<span class="pl-cm">	Date    : 2020-01-09 09:01:36</span>
<span class="pl-cm">********************/</span>
<span class="pl-cp">#include</span><span class="pl-cpf">&lt;cstdio&gt;</span><span class="pl-cp"></span>
<span class="pl-cp">#include</span><span class="pl-cpf">&lt;iostream&gt;</span><span class="pl-cp"></span>
<span class="pl-cp">#include</span><span class="pl-cpf">&lt;algorithm&gt;</span><span class="pl-cp"></span>
<span class="pl-cp">#include</span><span class="pl-cpf">&lt;cmath&gt;</span><span class="pl-cp"></span>
<span class="pl-kt">double</span> <span class="pl-nf">dist</span><span class="pl-p">(</span><span class="pl-kt">long</span> <span class="pl-kt">long</span> <span class="pl-n">x1</span><span class="pl-p">,</span><span class="pl-kt">long</span> <span class="pl-kt">long</span> <span class="pl-n">y1</span><span class="pl-p">,</span><span class="pl-kt">long</span> <span class="pl-kt">long</span> <span class="pl-n">x2</span><span class="pl-p">,</span><span class="pl-kt">long</span> <span class="pl-kt">long</span> <span class="pl-n">y2</span><span class="pl-p">){</span>
	<span class="pl-k">return</span> <span class="pl-n">sqrt</span><span class="pl-p">((</span><span class="pl-n">x1</span><span class="pl-o">-</span><span class="pl-n">x2</span><span class="pl-p">)</span><span class="pl-o">*</span><span class="pl-p">(</span><span class="pl-n">x1</span><span class="pl-o">-</span><span class="pl-n">x2</span><span class="pl-p">)</span><span class="pl-o">+</span><span class="pl-p">(</span><span class="pl-n">y1</span><span class="pl-o">-</span><span class="pl-n">y2</span><span class="pl-p">)</span><span class="pl-o">*</span><span class="pl-p">(</span><span class="pl-n">y1</span><span class="pl-o">-</span><span class="pl-n">y2</span><span class="pl-p">));</span>
<span class="pl-p">}</span>
<span class="pl-kt">int</span> <span class="pl-nf">main</span><span class="pl-p">(){</span>
	<span class="pl-n">freopen</span><span class="pl-p">(</span><span class="pl-s">&quot;snow.in&quot;</span><span class="pl-p">,</span><span class="pl-s">&quot;r&quot;</span><span class="pl-p">,</span><span class="pl-n">stdin</span><span class="pl-p">);</span>
	<span class="pl-n">freopen</span><span class="pl-p">(</span><span class="pl-s">&quot;snow.out&quot;</span><span class="pl-p">,</span><span class="pl-s">&quot;w&quot;</span><span class="pl-p">,</span><span class="pl-n">stdout</span><span class="pl-p">);</span>
	<span class="pl-kt">long</span> <span class="pl-kt">long</span> <span class="pl-n">bx</span><span class="pl-p">,</span><span class="pl-n">by</span><span class="pl-p">,</span><span class="pl-n">x1</span><span class="pl-p">,</span><span class="pl-n">y1</span><span class="pl-p">,</span><span class="pl-n">x2</span><span class="pl-p">,</span><span class="pl-n">y2</span><span class="pl-p">;</span>
	<span class="pl-kt">double</span> <span class="pl-n">sum</span><span class="pl-o">=</span><span class="pl-mi">0</span><span class="pl-p">;</span>
	<span class="pl-n">scanf</span><span class="pl-p">(</span><span class="pl-s">&quot;%lld%lld&quot;</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">bx</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">by</span><span class="pl-p">);</span>
	<span class="pl-k">while</span><span class="pl-p">(</span><span class="pl-o">~</span><span class="pl-n">scanf</span><span class="pl-p">(</span><span class="pl-s">&quot;%lld%lld%lld%lld&quot;</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">x1</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">y1</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">x2</span><span class="pl-p">,</span><span class="pl-o">&amp;</span><span class="pl-n">y2</span><span class="pl-p">))</span><span class="pl-n">sum</span><span class="pl-o">+=</span><span class="pl-n">dist</span><span class="pl-p">(</span><span class="pl-n">x1</span><span class="pl-p">,</span><span class="pl-n">y1</span><span class="pl-p">,</span><span class="pl-n">x2</span><span class="pl-p">,</span><span class="pl-n">y2</span><span class="pl-p">)</span><span class="pl-o">/</span><span class="pl-mi">1000</span><span class="pl-p">;</span>
	<span class="pl-kt">long</span> <span class="pl-kt">long</span> <span class="pl-n">h</span><span class="pl-o">=</span><span class="pl-n">sum</span><span class="pl-o">/</span><span class="pl-mi">10</span><span class="pl-p">;</span>
	<span class="pl-kt">double</span> <span class="pl-n">mf</span><span class="pl-o">=</span><span class="pl-p">(</span><span class="pl-n">sum</span><span class="pl-o">/</span><span class="pl-mi">10</span><span class="pl-o">-</span><span class="pl-n">h</span><span class="pl-p">)</span><span class="pl-o">*</span><span class="pl-mi">60</span><span class="pl-p">;</span>
	<span class="pl-kt">long</span> <span class="pl-kt">long</span> <span class="pl-n">m</span><span class="pl-o">=</span><span class="pl-n">mf</span><span class="pl-p">;</span>
	<span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">mf</span><span class="pl-o">-</span><span class="pl-n">m</span><span class="pl-o">&gt;=</span><span class="pl-mf">0.5</span><span class="pl-p">)</span><span class="pl-n">m</span><span class="pl-o">++</span><span class="pl-p">;</span>
	<span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;%lld:&quot;</span><span class="pl-p">,</span><span class="pl-n">h</span><span class="pl-p">);</span>
	<span class="pl-k">if</span><span class="pl-p">(</span><span class="pl-n">m</span><span class="pl-o">&lt;</span><span class="pl-mi">10</span><span class="pl-p">)</span><span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;0&quot;</span><span class="pl-p">);</span>
	<span class="pl-n">printf</span><span class="pl-p">(</span><span class="pl-s">&quot;%lld&quot;</span><span class="pl-p">,</span><span class="pl-n">m</span><span class="pl-p">);</span>
	<span class="pl-k">return</span> <span class="pl-mi">0</span><span class="pl-p">;</span>
<span class="pl-p">}</span>
</cpde></pre></div>